scholarly journals Distinctive plumage patterns enable individual recognition of the Australian Magpie Cracticus tibicen

2020 ◽  
Author(s):  
Ishini K. Kuruppu ◽  
Denis A. Saunders
Keyword(s):  
High School ◽  
High School Students ◽  
Pattern Matching ◽  
Individual Recognition ◽  
School Students ◽  
Black And White ◽  
Participant Gender ◽  
Australian Magpie

ABSTRACT We investigated whether the plumage patterns of the Australian Magpie Cracticus tibicen, a mediumsized, black and white bird, common over most of mainland Australia and Tasmania, including cities and towns, were sufficiently different and distinctive to allow humans to identify individual birds. Eighty participants took part in our pattern matching experiment to see how many of 10 photographs of individual birds they placed correctly below a panel showing 20 individual birds, each illustrated with three different photographs. Participants were from a range of ages, although the majority were high school students. All but two successfully matched some of the birds but there were considerable differences in accuracy and speed of performance. We tested differences in accuracy and time taken by participant, gender, age, and whether testing alone or testing at the same time as four other participants. We concluded that it is possible for humans to recognise individual Australian Magpies based on the birds’ plumage.

scholarly journals IMPLEMENTASI BOYER-MOORE PADA APLIKASI PENCARIAN RUMUS MATEMATIKA DAN FISIKA

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Halim Agung ◽  
Yogyawan Yogyawan
Keyword(s):  
High School ◽  
High School Students ◽  
Pattern Matching ◽  
String Matching ◽  
Matching Method ◽  
School Students ◽  
Matching Algorithm ◽  
Testing Method ◽  
The One ◽  
Mathematics And Physics

[Id]Sulitnya mencari dan menghafalkan rumus matematika dan fisika menjadi kendala bagi sebagian pelajar SMA terutama dalam menjawab soal yang ada. Dibutuhkan ketelitian untuk menentukan apa saja yang tercantum dalam soal tersebut. Penelitian ini meneliti bagaimana cara melakukan pendeteksian kata kunci yang terdapat pada soal matematika dan fisika sekaligus dicocokkan dengan menggunakan metode pencocokan kata. Algoritma yang digunakan untuk melakukan pencocokan kata adalah algoritma Boyer-Moore. Setiap data kata kunci yang ada di basis data akan diambil berdasarkan fisika atau matematika, kemudian dipecah per kata. Setelah data kata kunci sudah dipecah menjadi per kata, tiap kata kunci akan melakukan pencocokkan ke soal yang dimasukkan pengguna dengan metode pencocokkan kata. Setelah dicocokkan dan hasil pencocokkan berhasil, aplikasi akan menampilkan daftar rumus yang memiliki kata kunci cocok dengan yang ada di soal. Pengujian metode pencocokan kata dengan algoritma Boyer-Moore pada soal matematika dan fisika yang sebanyak 30 kali membuktikan bawah aplikasi dapat menampilkan daftar rumus yang sesuai dalam melakukan pencocokkan pola kata kunci di soal baik matematika maupun fisika tingkat SMA.Kata kunci :Pencocokan Kata Kunci, Boyer-Moore, Rumus, Matematika, Fisika[en]Difficult to find and memorize math and physics becomes an obstacle for the majority of high school students, especially in answering the questions that exist. It takes precision to determine what is stated in the question. This study investigated how to make the detection of keywords contained in the math and physics as well matched using string matching method. The algorithm used to perform string matching algorithm is the Boyer-Moore. Each keyword data in the database will be taken based on the physics or mathematics, then broken down per word. Once the data has been broken down into key words per word, every keyword will perform matching to the matter that the user entered with a string matching method. Once matched and the matching result is successful, the application will display a list of formulas that have keywords match the one in question. Testing method of string matching algorithms Boyer-Moore in math and physics as much as 30 times to prove under the application can display a list of the appropriate formula in performing the pattern matching keywords in a matter of both mathematics and physics high school level.Keywords : String Matching, Boyer-Moore, Formula, Math, Physics.

Race, Poverty and SAT Scores: Modeling the Influences of Family Income on Black and White High School Students’ SAT Performance

2013 ◽  
Vol 115 (4) ◽  
pp. 1-33 ◽  
Author(s):  
Ezekiel J. Dixon-RomÁN ◽  
Howard T. Everson ◽  
John J. Mcardle
Keyword(s):  
High School ◽  
High School Students ◽  
Parental Education ◽  
Family Income ◽  
School Achievement ◽  
School Students ◽  
Sat Scores ◽  
Black And White ◽  
High School Achievement ◽  
The Relationship

Background Educational policy makers and test critics often assert that standardized test scores are strongly influenced by factors beyond individual differences in academic achievement such as family income and wealth. Unfortunately, few empirical studies consider the simultaneous and related influences of family income, parental education, and high school achievement on college admissions test scores. Focus Of Study This research was animated by the nagging question of the association of family income with SAT performance. For example, is the relationship between family income and SAT performance non-linear? Does the relationship differ markedly by race? More importantly, how strong are the effects of poverty on SAT performance? Research Design This study is a secondary analysis of a large national sample of Black and White college-bound high school students who took the SAT in 2003 (N = 781,437). Data Collection and Analysis Employing data from the College Board's Student Descriptive Questionnaire, this study used structural equation modeling (SEM) to estimate the effects of family income on SAT scores for Black and White examinees accounting for the simultaneous effects of parental education and high school achievement. Findings/Results Results suggest the effects of family income on SAT scores, though relatively modest in contrasts to high school achievement, are substantial, non-linear, and nearly twice as large for Black students. Moreover, the unstandardized direct effect of high school achievement on SAT performance is not enough to address the substantial effects of poverty for Black students. Conclusions/Recommendations The findings are discussed with respect to social inequality and educational opportunity in college admissions.

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